Planter insert



FIG. 1 is a top perspective view of a planter insert, embodying my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is bottom plan view thereof;

FIG. 4 is a front elevation view thereof;

FIG. 5 is a rear elevation view thereof;

FIG. 6 is a first side elevation view thereof; and,

FIG. 7 is a second side elevation view thereof. 

CLAIM The ornamental design for a planter insert, as shown and described. 